I can't find an automatic signal system that doesn't use a computer. I don't care about cost, but I don't need it right now. I'd likeat least red, yellow and green. It can be flashing, but it doesn't matter. It's for an HO railroad.
Ah. That I had seen, but it didn't exactly make sense. So, you'd basically be building your own signaling computer? I understand it now, but what do they make for turnouts? Does it do anything with the signaling system?
Basically, with the Circuitron system, block occupancy detection is accomplished with photo optical sensors. The logic and signal drivers are provided by the Circuitron boards.